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This adapter cable converts USB 3.0 20-pin female motherboard header to USB 2.0 9-pin male connector perfectly. It enables seamless conversion and compatibility between different motherboard internal USB headers, solving the mismatch problem of chassis front panel ports. Made of high-quality insulated wire and precision molded terminals, it ensures stable signal transmission, anti-interference and long service life. Easy to plug and install, no driver required. Great for desktop PC assembly, motherboard front panel USB expansion, chassis modification and office computer DIY wiring upgrade.